{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:KD6W6NUTKX4TFWYRR3K6WLXTZG","short_pith_number":"pith:KD6W6NUT","canonical_record":{"source":{"id":"2102.07896","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2021-02-16T00:16:33Z","cross_cats_sorted":["cs.SD","eess.AS","eess.IV"],"title_canon_sha256":"ade0a2ac339ce9c68c7dd999a7b4f9901918d56619991ee3910957efbe491fbc","abstract_canon_sha256":"c83ec54f20653b0b13a4124cf8397e0a7d1e615612700b9895540a245a619ac9"},"schema_version":"1.0"},"canonical_sha256":"50fd6f369355f932db118ed5eb2ef3c99d4e7ce149bf076cb304501c0ddf3166","source":{"kind":"arxiv","id":"2102.07896","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.07896","created_at":"2026-07-05T02:59:55Z"},{"alias_kind":"arxiv_version","alias_value":"2102.07896v1","created_at":"2026-07-05T02:59:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.07896","created_at":"2026-07-05T02:59:55Z"},{"alias_kind":"pith_short_12","alias_value":"KD6W6NUTKX4T","created_at":"2026-07-05T02:59:55Z"},{"alias_kind":"pith_short_16","alias_value":"KD6W6NUTKX4TFWYR","created_at":"2026-07-05T02:59:55Z"},{"alias_kind":"pith_short_8","alias_value":"KD6W6NUT","created_at":"2026-07-05T02:59:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:KD6W6NUTKX4TFWYRR3K6WLXTZG","target":"record","payload":{"canonical_record":{"source":{"id":"2102.07896","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2021-02-16T00:16:33Z","cross_cats_sorted":["cs.SD","eess.AS","eess.IV"],"title_canon_sha256":"ade0a2ac339ce9c68c7dd999a7b4f9901918d56619991ee3910957efbe491fbc","abstract_canon_sha256":"c83ec54f20653b0b13a4124cf8397e0a7d1e615612700b9895540a245a619ac9"},"schema_version":"1.0"},"canonical_sha256":"50fd6f369355f932db118ed5eb2ef3c99d4e7ce149bf076cb304501c0ddf3166","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:59:55.413517Z","signature_b64":"YXB/eemKVjm3fqGxyXlV5znyaVOwyOGX4BX4qzodkYUhGQBPYs5AwzSa6A1xaJtA+sC30Var4WZhuJX96CAqCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"50fd6f369355f932db118ed5eb2ef3c99d4e7ce149bf076cb304501c0ddf3166","last_reissued_at":"2026-07-05T02:59:55.413025Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:59:55.413025Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2102.07896","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:59:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/Ti3fCd5eddJkTXYtljOp/HZSzpISmqHo48+rkbnoUGJiDb4zViSOTmq3FaAb74OvBTxjjUfKkEFsW087jPiCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T10:39:01.018185Z"},"content_sha256":"2e49ade716f74e063480e8a1499d71756fe32736d52cfb7cb5187e13dac030b2","schema_version":"1.0","event_id":"sha256:2e49ade716f74e063480e8a1499d71756fe32736d52cfb7cb5187e13dac030b2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:KD6W6NUTKX4TFWYRR3K6WLXTZG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A multispeaker dataset of raw and reconstructed speech production real-time MRI video and 3D volumetric images","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SD","eess.AS","eess.IV"],"primary_cat":"eess.SP","authors_text":"Asterios Toutios, Bianca Godinez, Caitlin Smith, Colin Vaz, Dani Byrd, Johannes T\\\"oger, Krishna S. Nayak, Louis Goldstein, Mairym Llor\\'ens Montesserin, Miran Oh, Sajan Goud Lingala, Sarah Harper, Shrikanth S. Narayanan, Tanner Sorensen, Weiyi Chen, Yannick Bliesener, Ye Tian, Yongwan Lim, Yoonjeong Lee","submitted_at":"2021-02-16T00:16:33Z","abstract_excerpt":"Real-time magnetic resonance imaging (RT-MRI) of human speech production is enabling significant advances in speech science, linguistics, bio-inspired speech technology development, and clinical applications. Easy access to RT-MRI is however limited, and comprehensive datasets with broad access are needed to catalyze research across numerous domains. The imaging of the rapidly moving articulators and dynamic airway shaping during speech demands high spatio-temporal resolution and robust reconstruction methods. Further, while reconstructed images have been published, to-date there is no open da"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.07896","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2102.07896/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:59:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iUAwIYEJx0JW49xBzInK6Jg18EiK7ztUet5grokAY8brrnEcoL+BXHdnEsv41mphL/hO/kK/V6VwybMBQEtQCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T10:39:01.018714Z"},"content_sha256":"359bcf53ff179cac30a8de14b5585834c66535d47dc984a3ac9dd88de0769ae5","schema_version":"1.0","event_id":"sha256:359bcf53ff179cac30a8de14b5585834c66535d47dc984a3ac9dd88de0769ae5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KD6W6NUTKX4TFWYRR3K6WLXTZG/bundle.json","state_url":"https://pith.science/pith/KD6W6NUTKX4TFWYRR3K6WLXTZG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KD6W6NUTKX4TFWYRR3K6WLXTZG/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-07T10:39:01Z","links":{"resolver":"https://pith.science/pith/KD6W6NUTKX4TFWYRR3K6WLXTZG","bundle":"https://pith.science/pith/KD6W6NUTKX4TFWYRR3K6WLXTZG/bundle.json","state":"https://pith.science/pith/KD6W6NUTKX4TFWYRR3K6WLXTZG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KD6W6NUTKX4TFWYRR3K6WLXTZG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:KD6W6NUTKX4TFWYRR3K6WLXTZG","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"c83ec54f20653b0b13a4124cf8397e0a7d1e615612700b9895540a245a619ac9","cross_cats_sorted":["cs.SD","eess.AS","eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2021-02-16T00:16:33Z","title_canon_sha256":"ade0a2ac339ce9c68c7dd999a7b4f9901918d56619991ee3910957efbe491fbc"},"schema_version":"1.0","source":{"id":"2102.07896","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.07896","created_at":"2026-07-05T02:59:55Z"},{"alias_kind":"arxiv_version","alias_value":"2102.07896v1","created_at":"2026-07-05T02:59:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.07896","created_at":"2026-07-05T02:59:55Z"},{"alias_kind":"pith_short_12","alias_value":"KD6W6NUTKX4T","created_at":"2026-07-05T02:59:55Z"},{"alias_kind":"pith_short_16","alias_value":"KD6W6NUTKX4TFWYR","created_at":"2026-07-05T02:59:55Z"},{"alias_kind":"pith_short_8","alias_value":"KD6W6NUT","created_at":"2026-07-05T02:59:55Z"}],"graph_snapshots":[{"event_id":"sha256:359bcf53ff179cac30a8de14b5585834c66535d47dc984a3ac9dd88de0769ae5","target":"graph","created_at":"2026-07-05T02:59:55Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2102.07896/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Real-time magnetic resonance imaging (RT-MRI) of human speech production is enabling significant advances in speech science, linguistics, bio-inspired speech technology development, and clinical applications. Easy access to RT-MRI is however limited, and comprehensive datasets with broad access are needed to catalyze research across numerous domains. The imaging of the rapidly moving articulators and dynamic airway shaping during speech demands high spatio-temporal resolution and robust reconstruction methods. Further, while reconstructed images have been published, to-date there is no open da","authors_text":"Asterios Toutios, Bianca Godinez, Caitlin Smith, Colin Vaz, Dani Byrd, Johannes T\\\"oger, Krishna S. Nayak, Louis Goldstein, Mairym Llor\\'ens Montesserin, Miran Oh, Sajan Goud Lingala, Sarah Harper, Shrikanth S. Narayanan, Tanner Sorensen, Weiyi Chen, Yannick Bliesener, Ye Tian, Yongwan Lim, Yoonjeong Lee","cross_cats":["cs.SD","eess.AS","eess.IV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2021-02-16T00:16:33Z","title":"A multispeaker dataset of raw and reconstructed speech production real-time MRI video and 3D volumetric images"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.07896","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:2e49ade716f74e063480e8a1499d71756fe32736d52cfb7cb5187e13dac030b2","target":"record","created_at":"2026-07-05T02:59:55Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"c83ec54f20653b0b13a4124cf8397e0a7d1e615612700b9895540a245a619ac9","cross_cats_sorted":["cs.SD","eess.AS","eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2021-02-16T00:16:33Z","title_canon_sha256":"ade0a2ac339ce9c68c7dd999a7b4f9901918d56619991ee3910957efbe491fbc"},"schema_version":"1.0","source":{"id":"2102.07896","kind":"arxiv","version":1}},"canonical_sha256":"50fd6f369355f932db118ed5eb2ef3c99d4e7ce149bf076cb304501c0ddf3166","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"50fd6f369355f932db118ed5eb2ef3c99d4e7ce149bf076cb304501c0ddf3166","first_computed_at":"2026-07-05T02:59:55.413025Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:59:55.413025Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YXB/eemKVjm3fqGxyXlV5znyaVOwyOGX4BX4qzodkYUhGQBPYs5AwzSa6A1xaJtA+sC30Var4WZhuJX96CAqCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:59:55.413517Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.07896","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2e49ade716f74e063480e8a1499d71756fe32736d52cfb7cb5187e13dac030b2","sha256:359bcf53ff179cac30a8de14b5585834c66535d47dc984a3ac9dd88de0769ae5"],"state_sha256":"fc319cfd0f52cad125cdfd167fd3f6e9b62de3c52e09ae4f1b81e990fd50833f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ASwpifpmDBAuOGwi0IgD+f0qAjrCLUrXwREvX+evT2j7Qh/jp0E6yYKoyCo8INoBXg4lFfPWUM7GEqF5dKCnDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T10:39:01.024554Z","bundle_sha256":"06e6981021716c4056928da5ba5bc2d0af233e5cb3ec0e22a0448a2a274a70ba"}}